Rio Oso (USA) Horse
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About
Rio Oso, a 4yo bay from the United States trained by Kelly Lynn Deiter, is by Long River out of Bear Moon. The horse has not yet broken its maiden, having finished unplaced in five starts. In its latest start at Delaware Park on 29 May 2026, jockey Edgar Villasmil guided Rio Oso to a third‑place finish, trailing winner Izzy'S Rock Star.
Race Record
| Event Summary | Runner Stats | Rank |
|---|---|---|
| Delaware Park 29-May-26 1106m SOFT R9 Md $1,800 (of $18,000) Barrier 5, Winning Time: 01:07.380, SP: 8.50 , rated back off the top pair soon after the start, stalked those two, eased out leaving the turn and finished evenly. 1st Izzy'S Rock Star ( P Lopez 119 ) 2nd Adios Senoritas ( M Chuan 119 ) 0.25L 3rd Rio Oso ( E Villasmil 124 ) 1.50L See full results | E Villasmil 56.2kg 1.50L | 3 (6) |
| Charles Town 25-Apr-26 1308m GOOD R5 Md $4,100 (of $20,500) Barrier 6, Winning Time: 01:22.310, SP: 26.00 broke alertly, prompted the pace along the rail around the first turn, sent to the attack inside leaving the quarter pole, stuck a head in front turning into the lane, no match from the sixteenth marker, chased on late. 1st Fox Fifty Eight ( M Santaella 124 ) 2nd Rio Oso ( E Villasmil 126 ) 3.00L 3rd Sperry Chalet ( A Mawing 124 ) 2.75L See full results | E Villasmil 57.2kg 3.00L | 2 (10) |
| Charles Town 12-Apr-26 1308m FIRM R4 Md $1,330 (of $13,300) Barrier 8, Winning Time: 01:23.960, SP: 9.00 very slow into stride, sent to the attack four wide into the far turn, willingly held on late for the show prize. 1st Vamonos Chicas ( J Stokes 124 ) 2nd Brand New Dance ( W Cullum 126 ) 2.00L 3rd Rio Oso ( E Villasmil 126 ) 4.50L See full results | E Villasmil 57.2kg 4.50L | 3 (8) |
| Charles Town 29-Mar-26 905m FIRM R3 Md $395 (of $13,300) Barrier 6, Winning Time: 00:54.280, SP: 5.50 broke a step slow, chased three wide around the turn, running on the wrong lead, faded through the lane. 1st Holy Brick ( A Cruz 126 ) 2nd Palpitations ( N B Arroyo 116 ) 3.00L 3rd Fifth Of June ( E Villasmil 126 ) 2.00L 5th Rio Oso ( J Lewis 126 ) 7.25L See full results | J Lewis 57.2kg 7.25L | 5 (7) |
| Timonium 24-Aug-25 805m FIRM R8 Md $700 (of $8,400) Barrier 3, SP: 7.50 1st Grosse Ile ( C Lopez 126 ) 2nd New York Lights ( J Cespedes 121 ) 1.00L 3rd Bella Creed ( C Mongan 121 ) 1.75L 4th Rio Oso ( X Perez 121 ) 4.25L | X Perez 54.9kg 4.25L | 4 (5) |